[The Duke]

The starboard side outlets on the boat are inop. The switch on the panel is on. Is there a GFI switch, other than the one on the helm outlet, located anywhere on the boat?

I had the same issue on my 06 38 open, besides the breakers that are labeled for the outlets on the electrical panel, I found three blind (no plug in holes)  GFCI’s behind the main salon seat cushion.  On my boat it’s to the left of the breaker panels under the stairs.  First pull the seat cushion and underneath there should be a removable panel behind which you’ll find  the battery charger 
And the three blind GFCIs.